[1] After acceptance trials at Danzig (where she was first detected by Room 40, which followed and recorded all her subsequent movements),[4] commanded by Kapitänleutnant (Lieutenant) Bieler.

[5] She joined the Kiel School 2 November 1917,[4] leaving for the North Sea about the end of December 1917, being attached to the 3rd Flotilla at Wilhelmshaven.

[5] Again, she scored no victories, but was in the vicinity of The Skaw, at the time the commerce raider Wolf stranded a prize, Igotz Mendi, for two days.

She was again assigned to the southwest Ireland station, by way of Heligoland, the Kiel Canal, the Baltic, Denmark, Scotland, and Fair Isle.

[4] On his return, after his third consecutive dry patrol and in keeping with usual practise for unproductive skippers, Kptlt.. Bieler was relieved.

[10] She sank two armed steamers, the 2814 ton Ben Lomond 30 nmi (56 km; 35 mi) southeast of Daunts Rock and the 3,550 ton Mars 74 nmi (137 km; 85 mi) west by north of Bishop Rock.

"[4] At the end of 2007, her wreck was located there by the British Maritime and Coastguard Agency ship Anglian Sovereign.